HEAT 1/4 cup of the dressing in large skillet on medium heat. Add vegetables; cook and stir 15 min. or until vegetables are crisp-tender. Remove vegetables from skillet; cover to keep warm.
ADD remaining 1/4 cup dressing to skillet. Add chicken; cook 7 min. on each side or until chicken is cooked through. Return vegetables to skillet. Add olives; stir gently until well blended.
SERVE chicken and vegetables over rice.